I don't remember the end of LOTR or appendices on this...but in the book, Sam does not live in Bag End? I know he did the first couple of years after his marriage, Frodo says "There's as much room in Bag End for as big a family as you'd wish for" and Sam does move in. But after Frodo departs?

He can certainly afford to keep Bag End, I imagined he returned well recompensed from Gondor. Did Sam's giving up Bag End come from his regret over losing Frodo--hard to stay in a place that reminds of of your best friend who "died"--or was it just good politics on the part of the Mayor of the Shire--hobbits can be tetchy about those who "returned from living in foreign parts" and it makes good political sense for Master Samwise to love to humbler dwellings? Or did he think Bag End was cursed...Hey I don't admit toknowing as much as you guys do.